Ek Hasina Thi (2004)

Fast-paced thriller set in a world of deceit, treachery and betrayal. When Saif Ali Khan sweeps Urmila Matondkar, a single working woman, off her feet, she soon finds herself in a series of nightmarish situations. Arrested and thrown into prison with a bunch of tough female criminals for a crime she has not committed, she is determined to survive and in doing so, she transforms from an innocent city girl to a hardened woman determined to exact revenge in a chilling way.